Quigley, the former chairman of the British Institute of Graphologists, has analysed the signatures of party leaders competing in the national elections since the 1980s. What she has found, she says, is that this batch of politicians are uncannily alike. "It's almost like 'a politician's hand.' Of course there's no such thing. But these people are not a million miles from each other."

Four of the leaders signatures from their manifestos and party documents.

Image: Party Manifestos, documents Mashable Composite

David Cameron: Sincere, savvy and independent

Cameron during a signing ceremony on March 21, 2014.

Image: Olivier Hoslet, Pool/Associated Press

Quigley, who is also a psychologist, told Mashable that the current Prime Minister has a straightforward script, which hasn't changed vastly since he took office in 2010. "He's a man with sincerity ... but with savvy," she said, adding that handwriting would suggest that his ambition has increased over the past five years.

"David Cameron’s handwriting is small and mostly readable, with careful i-dots and t-bars and it is upright, showing his independent approach. It has a mixture of joined and un-joined letters within words to indicate both logic and intuition," Quigley writes in her analysis for Pen Heaven. She also noted a certain politeness that, she says, reflects his background and education.

"The way the second name tapers is a sign that he likes to go carefully so as to keep control of the situation."

Ed Miliband: Loyal, keen to be liked and supportive

abour Party Leader Ed Miliband signs autographs for passers by on October 31, 2014.

The Labour Party leader has uncluttered writing, which shows that he likes to be loyal and supportive, Quigley told Mashable, adding that his handwriting shows that he'll try to do his best.

"He has simplified upper zone strokes, showing structured thinking, in order to get things straight and to deliver a clear message that will make an impact," Quigley has written in her analysis. She notes that he underlines his signature and says that despite what he says he's very keen for people to like him.

"He has more words with separate letters than the others, showing that he gathers information, rather than making a plan and taking it directly to its conclusion," she writes.

Nigel Farage: Means business and does things his way

The newest national figure of the four, UKIP's leader has a high right hand, which could show that he's not as willing to compromise as the other three, Quigley told Mashable.

"He’s not the type to buckle under fire. The underline at the end is there to show that he means business and wants people to take notice," Quigley writes in her analysis.

"He does it his way," she said.

Nicola Sturgeon's signature on page three of the SNP manifesto.

She said handwriting samples are not available for the other three main party leaders Nicola Sturgeon, Leanne Wood and Natalie Bennett as they have had lower national profiles before this election. Sturgeon did include her signature on the SNP manifesto, but neither Bennett nor Wood included theirs.

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